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Originally Posted by BonzoHansen
but that 2nd gen will not outrun that z28. that is what stielow is saying. bolt on stuff is not what I am talking about. even details like fuel tank location are a hindrance to old cars. and they are aerodynamic bricks. you will not have the handling or braking of the new car. impossible. you might think so, but no. not IRS, no ABS, no traction control, no giant composite brakes, no aerodynamic advantage.
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They should be pretty close.
I have been following the progression of technology in automobiles and how it affects performance for a very long time - some things matter and others don't. As an example, Porsche loves to give minute details on how their new parts are 6% lighter, or 9% stronger or some other BS that makes zero difference.
ABS is a great system to have, but it cannot shorten stopping distances when cars are typically tire limited. You need to have more friction (wider, taller tires; downforce, or stickier compound) to stop quicker. I have not seen any test where the new Z28 is stopping in less than 100feet from 60mph. The big composite brakes are awesome, but they are necessary to keep a 3800lb+ track car from destroying iron rotors on the track, again not going to improve stopping distances; although they won't overheat and fade.
Handling is something that GM really did their homework on with the Z28. They made a floaty, heavy car into a world class handler. But you can equal 1.08g in many suspension packages for older musclecars now. My CMC customers are pulling over 1.4g on 275 width tires without any real downforce in their crapbox 3rd gens with stock style suspensions per the class rules.
Admitedly, 2nd gen aero is not awesome, but the 5th gens are pretty terrible - the 2014 z28 has a .46 CoD.
Quote:
Originally Posted by BonzoHansen
i'd love to build exactly what you describe, it's not like I am against all that. but it will not outrun that z on a big track lap after lap after lap. even if i threw the whole DSE catalog at it, the best wilwood setup I can buy, a big HP MAST engine, a built t56 with a cooler, a full floater rear with a cooler and then all the other parts you need to live for a our of wide open a weekend. BTW I'm probably near $50,000 in parts now.
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You read my mind in terms of parts to fill up the $75k budget. You definitely want to go 100% on the suspension and rubber, but you don't have to go so buck wild on a lot of parts that won't make the car perform better. A 6 piston 14" brake kit on a 3300lb car will work just as well as the 15.5" composite kit on the 3800lb Z28. You can run a 500hp LS3 as you are 500lbs less. Coolers are easy to stick in to keep everything from overheating. T56 is a bolt in these days. A little creative aero work and you are good to go.